an.10.57 Aṅguttara Nikāya (Numbered Discourses)

“Bhikkhus, these ten perceptions, when developed and cultivated, are of great fruit and benefit, culminating in the deathless, having the deathless as their consummation. What ten? (1) The perception of impermanence, (2) the perception of non-self, (3) the perception of death, (4) the perception of the repulsiveness of food, (5) the perception of non-delight in the entire world, (6) the perception of a skeleton, (7) the perception of a worm-infested corpse, (8) the perception of a livid corpse, (9) the perception of a fissured corpse, and (10) the perception of a bloated corpse. These ten perceptions, when developed and cultivated, are of great fruit and benefit, culminating in the deathless, having the deathless as their consummation.”